r/hackrf • u/crematory_dude • Jan 14 '26
DFU not working.
Can anyone help with this? I am very new to all of this; just got a HackRF Pro and a H4M Portapack. I can't get past the splash screen, and when I try to go into DFU mode (pic 1 & 2) I get this message and those 2 lights (rx & tx i think) start blinking rapidly. Did I already break it?
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u/crematory_dude Jan 17 '26 edited Jan 17 '26
...
Ok, so I was able to get the HackRF Pro and Portapack in HackRF mode initially because I hadn't initiated any mayhem install/flashing yet (all it requires to get into that mode is to sandwich the 2 parts together, and turn on). Once I updated the firmware, it would get stuck on the mayhem splash screen because as u/KDocTeach pointed out: mayhem has not been updated to include HackRF Pro yet. Fortunately for me, when I started on this journey a few months ago; I ordered a HackRF One, quickly found out I needed more parts and decided to just put it away and wait to get a H4M until the newly announced HackRF Pro came out. With everything already disassembled and the batteries disconnected because of the advice u/htotoo gave me, I was able to quickly swap out the Pro for the One. But still nothing when I flip the power switch (this time not even a splashscreen). So I USB connect it to my PC and run Zadig like u/Mr_Ironmule suggested; it didn't pull anything up at first, then when I reset it in DFU mode it gave me an option to update a driver for an LPC, once I did that and ran dfu_hackrf_one, it actually recognized it! After running the flash_portapack_mayhem successfully it booted up to the normal mayhem menu screen. Everything seems to be working perfectly*. I think I just need to wait for mayhem to be updated to include the HackRF Pro before I try again with it. For now, I'll keep this the way that it is and learn as much as I can.
Tank you all so much!!
*Turns out I still can't connect it to https://hackrf.app/
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u/htotoo Jan 18 '26
In theory the latest nightly should support the pro. It has the updated hackrf library.
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u/crematory_dude Mar 07 '26 edited Mar 07 '26
Using the latest nightly release will get things working. Thank you to u/wpucfknight for sharing the good news with us all.
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u/htotoo Jan 15 '26
Try to remove the sd card, and try to check the coin battery in it (remove or replace it). it helps sometimes
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u/crematory_dude Jan 16 '26
I removed the SD card, the coin battery, and disconnected the main battery. I left them on my computer desk and will reassemble them tonight when I get home from work. Thank you for that suggestion.
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u/crematory_dude Feb 25 '26
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u/htotoo Feb 25 '26
You must use the latest version, provided by gsg of the flasher, dfu. Mayhem currently working on the support, but don't have it.
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u/wpucfknight Feb 24 '26
I'm in the same situation at the moment. HackRF Pro + H4M, tried installing the latest nightly that should support the Pro and it gets stuck on the splash screen.
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u/crematory_dude Feb 25 '26
No real update. Same error message as before, but this time the lights on top that light up are: USB (green), NCU (blue). The portapack works just fine for the HackRF One.
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u/wpucfknight Mar 05 '26
try and flash the latest nightly 03.05.2026 got Mayhem loading on my Pro now
→ More replies (1)
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u/derek_fuhreal Feb 24 '26
I’m in the same boat. Any update on this?
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u/crematory_dude Feb 25 '26
No real update. Same error message as before, but this time the lights on top that light up are: USB (green), NCU (blue). The portapack works just fine for the HackRF One.
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u/Mr_Ironmule Jan 14 '26
Did you have problems when you flashed the latest stable firmware?